The line graph illustrates the levels of
air
pollutants in the UK from three different sources, from 1900 to 2005.
Use synonyms
Overall
, total Linking Words
emissions
experienced a substantial decline over the period, primarily driven by a reduction in industrial and household pollution, Use synonyms
while
transport Linking Words
emissions
rose gradually after the mid-20th century.
In 1990, the total amount of Use synonyms
air
pollutants was approximately 8 Use synonyms
million
Use synonyms
tonnes
, which being the largest contributorUse synonyms
,
accounting for approximately 6 Punctuation problem
apply
million
Use synonyms
tonnes
. Both the households and transport showed the same results of Use synonyms
air
contamination, at only 1 Use synonyms
million
Use synonyms
tonnes
. The number of Use synonyms
emissions
remained relatively stable until around 1993, after which a sharp decline in industrialUse synonyms
,
and household pollution began.
Punctuation problem
apply
According to
the line graph, Industry Linking Words
emissions
showed a gradual decline of around 3 Use synonyms
million
Use synonyms
tonnes
by the end of the year. Use synonyms
Similarly
, the number of Linking Words
air
contaminations from households remained stable during four years, Use synonyms
then
dropped to 0 Linking Words
million
Use synonyms
tonnes
in 2005. Use synonyms
In contrast
, transport pollution increased around 1,5 Linking Words
million
Use synonyms
tonnes
in 1993, Use synonyms
then
dropped to 1 Linking Words
million
Use synonyms
tonnes
in 1996 but began to rise, peaking at just over 3 Use synonyms
million
Use synonyms
tonnes
by 2005. Despite Use synonyms
this
increase, the total continued to fall, to around 5 Linking Words
million
in the period.Use synonyms